I have a 94' S10 4.3L 4x4 quarter ton truck. I can fix the little things on my truck, but the other day I was driving down the street and I heard a noise that sounded like a small thud. I then looked in my mirror and saw a trail of oil. My oil pressure went down to nothing, so I pulled over and got it towed home. Just wondering what some of the things that may have happened before i take it in. Am I in for a big repair, cuz this is out of my league. Will it be worth it to fix if I luv the old girl? What is the worst and best it could be?